CN114276726A - Water-based nanoscale anion seal primer for preventing tannin bleeding and preparation method thereof - Google Patents
Water-based nanoscale anion seal primer for preventing tannin bleeding and preparation method thereof Download PDFInfo
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- CN114276726A CN114276726A CN202111357022.XA CN202111357022A CN114276726A CN 114276726 A CN114276726 A CN 114276726A CN 202111357022 A CN202111357022 A CN 202111357022A CN 114276726 A CN114276726 A CN 114276726A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 229920001864 tannin Polymers 0.000 title claims abstract description 46
- 239000001648 tannin Substances 0.000 title claims abstract description 46
- 235000018553 tannin Nutrition 0.000 title claims abstract description 46
- 230000000740 bleeding effect Effects 0.000 title claims abstract description 30
- 150000001450 anions Chemical class 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 51
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 45
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 38
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 35
- 125000000129 anionic group Chemical group 0.000 claims abstract description 34
- 239000000654 additive Substances 0.000 claims abstract description 29
- 230000000996 additive effect Effects 0.000 claims abstract description 29
- 239000002002 slurry Substances 0.000 claims abstract description 25
- 239000000843 powder Substances 0.000 claims abstract description 21
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011787 zinc oxide Substances 0.000 claims abstract description 19
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 18
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 18
- 239000002562 thickening agent Substances 0.000 claims abstract description 18
- 238000000227 grinding Methods 0.000 claims abstract description 16
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 16
- 239000000080 wetting agent Substances 0.000 claims abstract description 16
- 239000003112 inhibitor Substances 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000003973 paint Substances 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 13
- -1 polydimethylsiloxane Polymers 0.000 claims description 13
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 12
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 12
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 12
- 229920000570 polyether Polymers 0.000 claims description 12
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims description 11
- 239000001263 FEMA 3042 Substances 0.000 claims description 11
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 claims description 11
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 claims description 11
- 229940033123 tannic acid Drugs 0.000 claims description 11
- 235000015523 tannic acid Nutrition 0.000 claims description 11
- 229920002258 tannic acid Polymers 0.000 claims description 11
- IPGANOYOHAODGA-UHFFFAOYSA-N dilithium;dimagnesium;dioxido(oxo)silane Chemical compound [Li+].[Li+].[Mg+2].[Mg+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O IPGANOYOHAODGA-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 230000002265 prevention Effects 0.000 claims description 9
- 230000000844 anti-bacterial effect Effects 0.000 claims description 8
- 239000003899 bactericide agent Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 claims description 3
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 3
- 150000003863 ammonium salts Chemical class 0.000 claims description 3
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 claims description 3
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical group O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical group [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims 3
- 239000002023 wood Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 125000002091 cationic group Chemical group 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229920005692 JONCRYL® Polymers 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007590 electrostatic spraying Methods 0.000 description 2
- 229940094522 laponite Drugs 0.000 description 2
- XCOBTUNSZUJCDH-UHFFFAOYSA-B lithium magnesium sodium silicate Chemical compound [Li+].[Li+].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Na+].[Na+].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3 XCOBTUNSZUJCDH-UHFFFAOYSA-B 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 241000199223 Elaeocarpus kirtonii Species 0.000 description 1
- 235000009414 Elaeocarpus kirtonii Nutrition 0.000 description 1
- 235000013584 Tabebuia pallida Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 238000007405 data analysis Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
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Landscapes
- Paints Or Removers (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a water-based nanoscale anion seal primer for preventing tannin bleeding and a preparation method thereof, wherein the seal primer comprises the following raw materials in parts by weight: 40-60 parts of water-based nanoscale anionic acrylic resin, 0.5-1.5 parts of wetting agent, 1-3 parts of dispersing agent, 0.6-2 parts of defoaming agent, 10-30 parts of titanium dioxide, 3-15 parts of talcum powder, 1-5 parts of zinc oxide, 0.5-3 parts of grinding powder, 4-15 parts of water, 4.5-13 parts of film-forming additive, 1-5 parts of tannin inhibitor, 1-4 parts of anti-settling slurry and 0.3-1 part of thickening agent.
Description
Technical Field
The invention relates to the field of wood coatings, in particular to a water-based nanoscale anion seal primer for preventing tannin bleeding and a preparation method thereof.
Background
The water-based wood coating has the environmental protection characteristic, so that the water-based wood coating is more and more applied to wood coating, however, tannic acid in a wood substrate has certain water solubility, and after the water-based paint is sprayed on the water-based wood coating, the tannic acid can slowly migrate to an upper paint film along with the volatilization of water, so that a white paint film turns yellow, and the paint film effect is influenced.
The existing method for preventing tannic acid from permeating upwards mainly comprises the following steps: 1. the conventional water-based acrylic acid copolymer emulsion is used as a main film forming substance to prepare the water-based tannin-proof seal primer, and the method has a poor sealing effect and is greatly influenced by the temperature and the humidity of the construction environment; 2. the tannic acid is sealed by adopting the water-based two-component seal primer, the water-based two-component primer has better relative sealing performance, but the construction is complicated, the cost is higher, the usable activation period of the coating is short, the waste is serious, and the coating cost is high; 3. the water-based cation resin is used as a film forming substance, tannin is fixed under the action of charges to prevent the tannin from migrating, and a hydrogen bond is formed between the tannin and a wood substrate, so that the tannin is sealed, but because the cation resin is acidic, common water-based white primer and white finish paint are both made of anion resin and are alkalescent, and after the cation sealed primer paint is sprayed, dregs can be generated if a pipeline or a spray gun is not cleaned completely and slightly remains, so that the production cannot be smoothly carried out; therefore, the use of the cationic seal primer is not only expensive, but also the pipeline cleaning is carried out after the spraying by spending a great deal of manpower and time, and the cationic seal primer is almost not used for electrostatic spraying or automatic reciprocating spraying with complicated pipelines.
Disclosure of Invention
The invention provides a water-based nanoscale anion tannin bleeding prevention seal primer and a preparation method thereof, which at least solve the problems in the prior art.
The invention provides a water-based nanoscale anion seal primer for preventing tannin bleeding, which comprises the following raw materials in parts by weight: 40-60 parts of water-based nano anionic acrylic resin, 0.5-1.5 parts of wetting agent, 1-3 parts of dispersing agent, 0.6-2 parts of defoaming agent, 10-30 parts of titanium dioxide, 3-15 parts of talcum powder, 1-5 parts of zinc oxide, 0.5-3 parts of grinding powder, 4-15 parts of water, 4.5-13 parts of film-forming additive, 1-5 parts of tannin inhibitor, 1-4 parts of anti-settling slurry and 0.3-1 part of thickening agent.
Further, the dispersing agent comprises a dispersing agent A and a dispersing agent B, wherein the dispersing agent A is a high molecular weight polyether modified polydimethylsiloxane dispersing agent, and the dispersing agent B is a high molecular weight ammonium salt dispersing agent;
the dispersing agent is a mixture of a dispersing agent A and a dispersing agent B;
the preferable weight ratio of the dispersant A to the dispersant B is 0.5-1.5: 0.5-1.5;
the dispersant A is selected from Germany BYK company, and the brand is BYK 190 dispersant;
the dispersant B is selected from the dispersant of Orotan 731A, Dow company, USA.
Further, the film forming additive comprises a film forming additive A, a film forming additive B and a film forming additive C, wherein the film forming additive A is ethylene glycol monobutyl ether, the film forming additive B is diethylene glycol monobutyl ether, and the film forming additive C is dipropylene glycol butyl ether;
the film forming aid is selected from DOW corporation, usa;
the film-forming additive is a mixture of a film-forming additive A, a film-forming additive B and a film-forming additive C;
the preferable weight ratio of the film-forming aid A to the film-forming aid B to the film-forming aid C is 2-5: 0.5-3.
Further, the defoaming agent comprises a defoaming agent A and a defoaming agent B; the defoaming agent A is a polyether modified polydimethylsiloxane defoaming agent, and the defoaming agent B is a concentrated polyether modified polydimethylsiloxane defoaming agent;
the defoaming agent is a mixture of a defoaming agent A and a defoaming agent B;
the defoaming agent A is selected from Germany BYK company and has the trade mark of: BYK-024;
the antifoaming agent B is selected from Germany EVOKA Yingchuanggao company with the trade name Tego Foamex 810;
the preferable weight ratio of the antifoaming agent A to the antifoaming agent B is 0.3 to 1.0: 0.3 to 1.0.
Further, the anti-settling slurry comprises the following raw materials in parts by weight: 85-92 parts of water, 0.2 part of bactericide and 8-12 parts of inorganic magnesium lithium silicate;
the preparation method of the anti-settling slurry comprises the following steps:
s1, adding water into a dispersion tank, stirring at 800-1200 rpm, adding a bactericide, and uniformly stirring;
s2, slowly adding inorganic magnesium lithium silicate into the S1 system; then dispersing at high speed of 1500 rpm for 20-30 minutes at 1000-; filtering with 120 mesh net to obtain the anti-settling slurry.
Further, the anti-settling slurry is 10% of anti-settling slurry; the anti-settling slurry comprises the following raw materials in parts by weight: 89.8 parts of water, 0.2 part of a bactericide and 10 parts of inorganic magnesium lithium silicate;
the inorganic magnesium lithium silicate is selected from BYK company of Germany and is sold as Laponite RDS.
Further, the solid content of the aqueous nanoscale anionic acrylic resin is 30 +/-2 percent, and the aqueous nanoscale anionic acrylic resin is selected from the group consisting of Joncryl 95 brand name and Pasteur chemical industry Co., Ltd;
the wetting agent is polyether modified polydimethylsiloxane, and comprises the following components in percentage by weight: 50 +/-2%;
the thickening agent is an associated polyurethane thickening agent;
the wetting agent is selected from BYK company of Germany with the trade name BYK 346;
the thickener is selected from German Mingling company under the brand number PUR 62.
Further, the titanium dioxide is rutile type titanium dioxide selected from Shandongjia with the brand number of 235;
the talcum powder is superfine talcum powder selected from Guangxi Longgong talcum powder development Limited company with the brand of WF90-20-99 superfine talcum powder;
the zinc oxide is coating grade zinc oxide selected from zinc vibroflotation industry, and the grade is zinc oxide;
the grinding powder is zinc stearate grinding powder selected from the circulation chemical industry and is marked as PLB;
the tannin inhibitor is complex selected from HALOX of Israel under the trademark Halox L44.
Another object of the present invention is to provide a preparation method of the water-based nanoscale anionic tannin bleeding prevention seal primer, which comprises the following steps:
s1, adding the water-based nano anionic acrylic resin into a dispersion cylinder, stirring at the rotating speed of 800-1000 r/min, and sequentially adding the wetting agent, the dispersing agent and the defoaming agent until the mixture is uniform;
s2, sequentially adding titanium dioxide, talcum powder, zinc oxide and grinding powder into the S1 system until the powder is completely dispersed; then high-speed dispersion is carried out at the speed of 1200 and 1500 revolutions per minute for 12 to 15 minutes, and the fineness is less than 50 microns;
s3, adding the film-forming aid into the S2 system at the speed of 800-1200 r/min, and stirring for 8-10 min;
s4, mixing the tannin inhibitor with water in a ratio of 1: 1, after uniformly mixing and stirring, slowly adding an S3 system under the state of 800-1200 r/min, and dispersing for 10 min;
s5, slowly adding the anti-settling slurry in the state of 800-1200 r/min, and dispersing for 10 min;
and S6, adjusting the viscosity by using a thickening agent, and filtering to obtain the water-based nano-scale anion tannin bleeding prevention seal primer.
Further, the step S6 is that the dispersion is uniform until the fineness is less than or equal to 50um, the viscosity is 75-85 KU/stormer viscometer @25 ℃, and the plate drawing paint film is uniform and smooth, and has no particles and no oil shrinkage.
The water-based nanoscale anion seal primer for preventing tannin bleeding is suitable for coating water-based white wood paint, has good seal effect, no bleeding, certain whiteness and covering power, good sanding property, electrostatic spraying or automatic reciprocating spraying, convenient construction, low cost and high production efficiency.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the following embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of the present invention.
It is noted that the terms first, second and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Example 1a water-based nanoscale anionic tannin bleeding resistant primer sealer comprising the following raw materials in parts by weight: 45 parts of water-based nanoscale anionic acrylic resin, 1 part of wetting agent, 2 parts of dispersing agent, 1 part of defoaming agent, 20 parts of titanium dioxide, 10 parts of talcum powder, 3 parts of zinc oxide, 2 parts of grinding powder, 10 parts of water, 10 parts of film-forming assistant, 4 parts of tannic acid inhibitor, 3 parts of anti-settling slurry and 0.8 part of thickening agent.
Example 2 a water-based nanoscale anionic tannin bleeding resistant primer sealer comprising the following raw materials in parts by weight: 55 parts of water-based nanoscale anionic acrylic resin, 1 part of wetting agent, 2 parts of dispersing agent, 1 part of defoaming agent, 20 parts of titanium dioxide, 10 parts of talcum powder, 1 part of zinc oxide, 2 parts of grinding powder, 10 parts of water, 10 parts of film-forming assistant, 2 parts of tannic acid inhibitor, 3 parts of anti-settling slurry and 0.8 part of thickening agent.
Example 3 a water-based nanoscale anionic tannin bleeding resistant primer sealer comprising the following raw materials in parts by weight: 55 parts of water-based nanoscale anionic acrylic resin, 1 part of wetting agent, 2 parts of dispersing agent, 1 part of defoaming agent, 20 parts of titanium dioxide, 10 parts of talcum powder, 4 parts of zinc oxide, 2 parts of grinding powder, 10 parts of water, 10 parts of film-forming assistant, 4 parts of tannic acid inhibitor, 3 parts of anti-settling slurry and 0.8 part of thickening agent.
Comparative example 1 the water-based acrylic resin sealing primer for preventing tannin from bleeding comprises, by weight, 55 parts of water-based acrylic resin, 1 part of wetting agent, 2 parts of dispersing agent, 1 part of defoaming agent, 20 parts of titanium dioxide, 10 parts of talcum powder, 1 part of zinc oxide, 2 parts of grinding powder, 10 parts of water, 10 parts of film-forming assistant, 2 parts of tannic acid inhibitor, 3 parts of anti-settling slurry and 0.8 part of thickening agent.
Wherein, the solid content of the waterborne nanometer anionic acrylic resin in the embodiments 1 to 3 is 30 +/-2 percent, and the waterborne nanometer anionic acrylic resin is selected from the limited company of Pasteur chemical industry and has the mark of Joncryl 95;
the wetting agent in examples 1-3 and comparative example 1 is polyether modified polydimethylsiloxane, and the solid content is as follows: 50 +/-2%;
the thickening agent is an associated polyurethane thickening agent;
the wetting agent is selected from BYK company of Germany with the trade name BYK 346;
the thickener is selected from German Mingling company under the brand number PUR 62.
The dispersing agent comprises a dispersing agent A and a dispersing agent B, wherein the dispersing agent A is a high molecular weight polyether modified polydimethylsiloxane dispersing agent, and the dispersing agent B is a high molecular weight ammonium salt dispersing agent; the dispersant A is selected from Germany BYK company, and the brand is BYK 190 dispersant; the dispersant B is selected from Dow company in America, and is named Orotan 731A dispersant, and the dispersant A and the dispersant B are mixed according to the weight ratio of 1: 1;
the film-forming aid comprises a film-forming aid A, a film-forming aid B and a film-forming aid C, wherein the film-forming aid A is ethylene glycol monobutyl ether, the film-forming aid B is diethylene glycol monobutyl ether, and the film-forming aid C is dipropylene glycol butyl ether; the film forming aid is selected from DOW corporation, usa; the film-forming additive is formed by mixing a film-forming additive A, a film-forming additive B and a film-forming additive C according to the weight ratio of 2: 0.5.
The defoaming agent comprises a defoaming agent A and a defoaming agent B; the defoaming agent A is a polyether modified polydimethylsiloxane defoaming agent, and the defoaming agent B is a concentrated polyether modified polydimethylsiloxane defoaming agent; the defoaming agent A is selected from Germany BYK company, and the brand number is as follows: BYK-024; the antifoaming agent B is selected from Germany EVOKA Yingchuanggao company with the trade name Tego Foamex 810;
the defoaming agent is prepared by mixing 0.5: 1.0 weight ratio of defoaming agent A and defoaming agent B.
Wherein, the anti-settling slurry of the embodiment 1-3 and the comparative example 1 is 10 percent of anti-settling slurry; the anti-settling slurry comprises the following raw materials in parts by weight: 89.8 parts of water, 0.2 part of bactericide and 10 parts of inorganic magnesium lithium silicate; the preparation method of the anti-settling slurry comprises the following steps:
s1, adding water into the dispersion tank, stirring at 800 revolutions per minute, adding the bactericide, and stirring uniformly;
s2, slowly adding inorganic magnesium lithium silicate into the S1 system; then dispersing at 1500 rpm for 20 minutes until the fineness is less than or equal to 60 um; filtering with 120 mesh net to obtain the anti-settling slurry. The inorganic magnesium lithium silicate is selected from BYK company of Germany and is sold as Laponite RDS.
The titanium dioxide is rutile type titanium dioxide selected from Shandongjia with the brand number of 235;
the talcum powder is superfine talcum powder selected from Guangxi Longgong talcum powder development Limited company with the brand of WF90-20-99 superfine talcum powder;
the zinc oxide is coating grade zinc oxide selected from zinc vibroflotation industry, and the grade is zinc oxide;
the grinding powder is zinc stearate grinding powder selected from the circulation chemical industry and is marked as PLB;
the tannin inhibitor is complex selected from HALOX of Israel under the trademark Halox L44.
Examples 1-3 preparation of aqueous nanoscale anionic tannin bleed-resistant basecoat sealer comprising the steps of:
s1, selecting a clean and qualified water-based clear primer dispersion cylinder, closing a valve, and clamping an electrostatic clamp; filtering the water-based nanoscale anionic acrylic resin through a 200-mesh filter screen, adding the filtered water-based nanoscale anionic acrylic resin into a dispersion cylinder, stirring at the rotating speed of 1000 revolutions per minute, and sequentially adding a wetting agent, a dispersing agent and a defoaming agent until the mixture is uniform;
s2, sequentially adding titanium dioxide, talcum powder and zinc oxide into the S1 system, grinding the powder until the powder is completely dispersed, and shoveling the edge of the cylinder to ensure that the powder is not bound and agglomerated; washing the powder on the side of the cylinder and the dispersion shaft into the cylinder by water, dispersing at a high speed of 1500 rpm for 12-15 minutes, stopping sampling, and inspecting the fineness and cleanliness, wherein the required fineness is less than 50 micrometers;
s3, after the inspection is qualified, starting stirring, and adding the film-forming aid into the S2 system at 1200 rpm and stirring for 10 minutes;
s4, mixing the tannin inhibitor with water in a ratio of 1: 1, after uniformly mixing and stirring, slowly adding an S3 system at 1200 rpm, and dispersing for 10 minutes;
s5, slowly adding the anti-settling slurry at 800 revolutions per minute, and dispersing for 10 minutes;
s6, adjusting the viscosity by using a thickening agent, and filtering to obtain the water-based nano-scale anion tannin bleeding prevention seal primer; the dispersion is uniform until the fineness is less than or equal to 50um, the viscosity is 75-85 KU/stormer viscometer @25 ℃, and a plate drawing paint film is uniform and smooth, and has no particles and no oil shrinkage.
Comparative example 2, a water-based tannin bleeding resistant seal primer, brand and model, was purchased from the market.
The performance test was performed on the water-based nanoscale anionic tannin bleeding resistant seal primer of example 3:
table 1, example 3 the various performance criteria of the aqueous nanoscale anionic tannin bleed resistant basecoat sealer are as follows:
as can be seen from Table 1, the water-based nano-anionic tannin bleeding prevention seal primer of example 3 has all performance indexes meeting the national standards.
The performance of the water-based nano-scale anionic tannin bleed-proof seal primer of examples 1-3 and the water-based tannin bleed-proof seal primer of comparative examples 1-2 were tested:
table 2, examples 1 to 3, and comparative examples 1 to 2 show the results of the performance test.
According to the data analysis, compared with the control example, the paint has the advantages that the sanding property is good, the construction is convenient, the adhesive force reaches more than one grade, the paint can be manually sprayed, brushed, electrostatically sprayed and automatically reciprocated, the adhesion of the coating and the base material is enhanced in the integral coating, pigments such as tannic acid are sealed in the wood, a certain whiteness and covering power are provided, the coating, the white primer and the finish paint are integrated, the requirements of the whiteness and the covering power of the paint film are met, and the paint film is white as before and is not yellowed; the construction is convenient, and the pipeline of the spraying equipment does not need to be cleaned manually or in time; the application time is long, the activation period is not limited, the construction is convenient, and the price is low; overcomes the problem that other conventional anionic resins cause paint film yellowing, and improves the production efficiency.
The water-based nanoscale anionic tannin-proof seal primer adopts water-based nanoscale anionic acrylic resin, has the advantages of fine particle size, good permeability and good sealing property, can bear various fillers, has good compatibility with tannin inhibitors and coating-grade zinc oxide, and can act together with the film-forming assistant and other formulations disclosed by the application to achieve a better sealing effect than cationic resin, effectively inhibit the problem of pollution to a white finish coat caused by migration and infiltration of tannic acid, prevent the white coat from yellowing, and enable the white paint film to be white as before.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the modifications and equivalents of the specific embodiments of the present invention can be made by those skilled in the art after reading the present specification, but these modifications and variations do not depart from the scope of the claims of the present application.
Claims (10)
1. The water-based nanoscale anion seal primer for preventing tannin bleeding is characterized by comprising the following raw materials in parts by weight: 40-60 parts of water-based nano anionic acrylic resin, 0.5-1.5 parts of wetting agent, 1-3 parts of dispersing agent, 0.6-2 parts of defoaming agent, 10-30 parts of titanium dioxide, 3-15 parts of talcum powder, 1-5 parts of zinc oxide, 0.5-3 parts of grinding powder, 4-15 parts of water, 4.5-13 parts of film-forming additive, 1-5 parts of tannin inhibitor, 1-4 parts of anti-settling slurry and 0.3-1 part of thickening agent.
2. The aqueous nanoscale anionic tannin bleeding prevention seal primer according to claim 1, wherein the dispersant comprises a dispersant A and a dispersant B, the dispersant A is a high molecular weight polyether modified polydimethylsiloxane dispersant, and the dispersant B is a high molecular weight ammonium salt dispersant;
the dispersing agent is a mixture of a dispersing agent A and a dispersing agent B;
the preferable weight ratio of the dispersant A to the dispersant B is 0.5-1.5: 0.5-1.5.
3. The water-based nanoscale anionic tannin bleeding resistant seal primer according to claim 1, wherein the film forming additive comprises a film forming additive A, a film forming additive B and a film forming additive C, wherein the film forming additive A is ethylene glycol monobutyl ether, the film forming additive B is diethylene glycol monobutyl ether, and the film forming additive C is dipropylene glycol butyl ether;
the film-forming additive is a mixture of a film-forming additive A, a film-forming additive B and a film-forming additive C;
the preferable weight ratio of the film-forming aid A to the film-forming aid B to the film-forming aid C is 2-5: 0.5-3.
4. The aqueous nanoscale anionic tannin bleeding resistant seal primer of claim 1, wherein the defoamer comprises defoamer a, defoamer B; the defoaming agent A is a polyether modified polydimethylsiloxane defoaming agent, and the defoaming agent B is a concentrated polyether modified polydimethylsiloxane defoaming agent;
the defoaming agent is a mixture of a defoaming agent A and a defoaming agent B;
the preferable weight ratio of the antifoaming agent A to the antifoaming agent B is 0.3 to 1.0: 0.3 to 1.0.
5. The water-based nanoscale anion tannin bleeding prevention seal primer as claimed in claim 1, wherein the anti-settling slurry comprises the following raw materials in parts by weight: 85-92 parts of water, 0.2 part of bactericide and 8-12 parts of inorganic magnesium lithium silicate;
the preparation method of the anti-settling slurry comprises the following steps:
s1, adding water into a dispersion tank, stirring at 800-1200 rpm, adding a bactericide, and uniformly stirring;
s2, slowly adding inorganic magnesium lithium silicate into the S1 system; then dispersing at high speed of 1500 rpm for 20-30 minutes at 1000-; filtering with 120 mesh net to obtain the anti-settling slurry.
6. The water-based nanoscale anion tannin bleeding prevention seal primer according to claim 5, wherein the anti-settling slurry comprises the following raw materials in parts by weight: 89.8 parts of water, 0.2 part of bactericide and 10 parts of inorganic magnesium lithium silicate.
7. The aqueous nanoscale anionic tannin bleeding resistant seal primer according to claim 1, wherein the aqueous nanoscale anionic tannin bleeding resistant seal primer comprises,
the aqueous nanoscale anionic acrylic resin contains: 30 plus or minus 2 percent;
the wetting agent is a polyether modified polydimethylsiloxane wetting agent;
the thickening agent is an associated polyurethane thickening agent.
8. The aqueous nanoscale anionic tannin bleeding resistant seal primer according to claim 1, wherein the aqueous nanoscale anionic tannin bleeding resistant seal primer comprises,
the titanium dioxide is rutile type titanium dioxide;
the talcum powder is superfine talcum powder;
the zinc oxide is coating grade zinc oxide;
the grinding powder is zinc stearate grinding powder;
the tannic acid inhibitor is a complex.
9. The method for preparing the aqueous nanoscale anionic tannin bleeding resistant primer sealer according to any one of claims 1 to 8, wherein the method comprises the following steps:
s1, adding the water-based nano anionic acrylic resin into a dispersion cylinder, stirring at the rotating speed of 800-1000 r/min, and sequentially adding a wetting agent, a dispersing agent and a defoaming agent until the mixture is uniform;
s2, sequentially adding titanium dioxide, talcum powder, zinc oxide and grinding powder into the S1 system until the powder is completely dispersed; then high-speed dispersion is carried out at the speed of 1200 and 1500 revolutions per minute for 12 to 15 minutes, and the fineness is less than 50 microns;
s3, adding the film-forming aid into the S2 system at the speed of 800-1200 r/min, and stirring for 8-10 min;
s4, mixing the tannin inhibitor with water in a ratio of 1: 1, after uniformly mixing and stirring, slowly adding an S3 system under the state of 800-1200 r/min, and dispersing for 10 min;
s5, slowly adding the anti-settling slurry in the state of 800-1200 r/min, and dispersing for 10 min;
and S6, adjusting the viscosity by using a thickening agent, and filtering to obtain the water-based nano-scale anion tannin bleeding prevention seal primer.
10. The preparation method of the paint as claimed in claim 9, wherein the step S6 is that the paint is dispersed uniformly to fineness less than or equal to 50um, viscosity is 75-85 KU/stormer viscometer @25 ℃, and the plate drawing paint film is uniform and smooth, and has no particles and no oil shrinkage.
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| CN101481437A (en) * | 2009-01-23 | 2009-07-15 | 华南理工大学 | Preparation of high closeness polyacrylacid ester dispersion |
| CN105001729A (en) * | 2015-07-09 | 2015-10-28 | 上海展辰涂料有限公司 | Aqueous white primer for sealing wood oil and tannic acid |
| CN109206993A (en) * | 2018-07-12 | 2019-01-15 | 河北晨阳工贸集团有限公司 | A kind of environment-friendly type aqueous wooden ware sealing priming paint and preparation method thereof |
| CN112358786A (en) * | 2020-11-30 | 2021-02-12 | 上海展辰涂料有限公司 | Anti-bleeding water-based seal primer and preparation method thereof |
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- 2021-11-16 CN CN202111357022.XA patent/CN114276726A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101481437A (en) * | 2009-01-23 | 2009-07-15 | 华南理工大学 | Preparation of high closeness polyacrylacid ester dispersion |
| CN105001729A (en) * | 2015-07-09 | 2015-10-28 | 上海展辰涂料有限公司 | Aqueous white primer for sealing wood oil and tannic acid |
| CN109206993A (en) * | 2018-07-12 | 2019-01-15 | 河北晨阳工贸集团有限公司 | A kind of environment-friendly type aqueous wooden ware sealing priming paint and preparation method thereof |
| CN112358786A (en) * | 2020-11-30 | 2021-02-12 | 上海展辰涂料有限公司 | Anti-bleeding water-based seal primer and preparation method thereof |
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